Bump actions/setup-node from 2.4.0 to 2.4.1

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 2.4.0 to 2.4.1.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v2.4.0...v2.4.1)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2.3.4
       - name: Setup Node.js
-        uses: actions/setup-node@v2.4.0
+        uses: actions/setup-node@v2.4.1
         with:
             cache: 'yarn'
       - run: yarn install --prefer-offline